package com.hmdp.utils;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import io.netty.util.internal.StringUtil;
import lombok.extern.slf4j.Slf4j;
import lombok.var;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Slf4j
public class LoginInterceptor implements HandlerInterceptor {

    //前置拦截器
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
       //1.判断是否需要拦截（ThreadLocal)中是否有用户
        if(UserHolder.getUser()==null){
            //没有的话，需要拦截，设置状态码
            response.setStatus(401);
            return false;
        }
        //.放行
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        //移除用户
        UserHolder.removeUser();
    }
}